206 lines
6.1 KiB
ArmAsm
206 lines
6.1 KiB
ArmAsm
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// This test checks various cases around sharing opcodes between epilogue and prologue
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// RUN: llvm-mc -triple thumbv7-pc-win32 -filetype=obj %s | llvm-readobj -u - | FileCheck %s
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// CHECK: RuntimeFunction {
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// CHECK-NEXT: Function: func1
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// CHECK-NEXT: ExceptionRecord:
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// CHECK-NEXT: ExceptionData {
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// CHECK-NEXT: FunctionLength:
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// CHECK-NEXT: Version:
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// CHECK-NEXT: ExceptionData:
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// CHECK-NEXT: EpiloguePacked: Yes
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// CHECK-NEXT: Fragment: No
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// CHECK-NEXT: EpilogueOffset: 2
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// CHECK-NEXT: ByteCodeLength:
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// CHECK-NEXT: Prologue [
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// CHECK-NEXT: 0xf5 0x15 ; vpush {d1-d5}
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// CHECK-NEXT: 0x05 ; sub sp, #(5 * 4)
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// CHECK-NEXT: 0xa0 0xf0 ; push.w {r4-r7, lr}
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// CHECK-NEXT: 0xfe ; b.w <target>
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// CHECK-NEXT: ]
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// CHECK-NEXT: Epilogue [
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// CHECK-NEXT: 0x05 ; add sp, #(5 * 4)
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// CHECK-NEXT: 0xa0 0xf0 ; pop.w {r4-r7, pc}
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// CHECK-NEXT: 0xfe ; b.w <target>
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// CHECK-NEXT: ]
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// CHECK-NEXT: }
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// CHECK-NEXT: }
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// CHECK-NEXT: RuntimeFunction {
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// CHECK-NEXT: Function: func2
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// CHECK-NEXT: ExceptionRecord:
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// CHECK-NEXT: ExceptionData {
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// CHECK-NEXT: FunctionLength:
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// CHECK-NEXT: Version:
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// CHECK-NEXT: ExceptionData:
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// CHECK-NEXT: EpiloguePacked: Yes
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// CHECK-NEXT: Fragment: No
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// CHECK-NEXT: EpilogueOffset: 0
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// CHECK-NEXT: ByteCodeLength: 4
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// CHECK-NEXT: Prologue [
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// CHECK-NEXT: 0xd2 ; push {r4-r6}
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// CHECK-NEXT: 0x04 ; sub sp, #(4 * 4)
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// CHECK-NEXT: 0xfd ; bx <reg>
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// CHECK-NEXT: ]
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// CHECK-NEXT: }
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// CHECK-NEXT: }
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// CHECK-NEXT: RuntimeFunction {
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// CHECK-NEXT: Function: func3
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// CHECK-NEXT: ExceptionRecord:
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// CHECK-NEXT: ExceptionData {
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// CHECK-NEXT: FunctionLength:
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// CHECK-NEXT: Version:
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// CHECK-NEXT: ExceptionData:
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// CHECK-NEXT: EpiloguePacked: Yes
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// CHECK-NEXT: Fragment: No
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// CHECK-NEXT: EpilogueOffset: 0
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// CHECK-NEXT: ByteCodeLength: 4
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// CHECK-NEXT: Prologue [
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// CHECK-NEXT: 0xe1 ; vpush {d8-d9}
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// CHECK-NEXT: 0xdf ; push.w {r4-r11, lr}
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// CHECK-NEXT: ]
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// CHECK-NEXT: }
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// CHECK-NEXT: }
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// CHECK-NEXT: RuntimeFunction {
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// CHECK-NEXT: Function: notshared1
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// CHECK-NEXT: ExceptionRecord:
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// CHECK-NEXT: ExceptionData {
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// CHECK-NEXT: FunctionLength:
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// CHECK-NEXT: Version:
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// CHECK-NEXT: ExceptionData:
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// CHECK-NEXT: EpiloguePacked: Yes
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// CHECK-NEXT: Fragment:
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// CHECK-NEXT: EpilogueOffset: 2
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// CHECK-NEXT: ByteCodeLength: 4
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// CHECK-NEXT: Prologue [
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// CHECK-NEXT: 0xdf ; push.w {r4-r11, lr}
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// CHECK-NEXT: ]
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// CHECK-NEXT: Epilogue [
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// CHECK-NEXT: 0xdb ; pop.w {r4-r11}
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// CHECK-NEXT: 0xfd ; bx <reg>
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// CHECK-NEXT: ]
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// CHECK: RuntimeFunction {
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// CHECK-NEXT: Function: notpacked2
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// CHECK-NEXT: ExceptionRecord:
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// CHECK-NEXT: ExceptionData {
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// CHECK-NEXT: FunctionLength:
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// CHECK-NEXT: Version:
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// CHECK-NEXT: ExceptionData:
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// CHECK-NEXT: EpiloguePacked: No
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// CHECK: RuntimeFunction {
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// CHECK-NEXT: Function: notpacked3
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// CHECK-NEXT: ExceptionRecord:
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// CHECK-NEXT: ExceptionData {
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// CHECK-NEXT: FunctionLength:
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// CHECK-NEXT: Version:
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// CHECK-NEXT: ExceptionData:
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// CHECK-NEXT: EpiloguePacked: No
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.text
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.syntax unified
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.seh_proc func1
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func1:
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push.w {r4-r7,lr}
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.seh_save_regs_w {r4-r7,lr}
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sub sp, sp, #20
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.seh_stackalloc 20
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vpush {d1-d5}
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.seh_save_fregs {d1-d5}
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.seh_endprologue
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nop
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.seh_startepilogue
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add sp, sp, #20
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.seh_stackalloc 20
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// As we're popping into lr instead of directly into pc, this pop
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// becomes a wide instruction. To match prologue vs epilogue, the
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// push in the prologue has been made wide too.
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pop.w {r4-r7,lr}
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.seh_save_regs_w {r4-r7,lr}
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b.w tailcall
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.seh_nop_w
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.seh_endepilogue
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.seh_endproc
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.seh_proc func2
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func2:
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sub sp, sp, #16
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.seh_stackalloc 16
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push {r4-r6}
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.seh_save_regs {r4-r6}
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.seh_endprologue
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nop
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.seh_startepilogue
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pop {r4-r6}
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.seh_save_regs {r4-r6}
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add sp, sp, #16
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.seh_stackalloc 16
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bx lr
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.seh_nop
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.seh_endepilogue
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.seh_endproc
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.seh_proc func3
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func3:
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push {r4-r11,lr}
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.seh_save_regs_w {r4-r11,lr}
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vpush {d8-d9}
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.seh_save_fregs {d8-d9}
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.seh_endprologue
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nop
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.seh_startepilogue
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vpop {d8-d9}
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.seh_save_fregs {d8-d9}
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pop {r4-r11,pc}
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.seh_save_regs_w {r4-r11,pc}
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.seh_endepilogue
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.seh_endproc
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.seh_proc notshared1
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notshared1:
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push {r4-r11,lr}
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.seh_save_regs_w {r4-r11,lr}
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.seh_endprologue
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nop
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.seh_startepilogue
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// Packed, but not shared as this opcode doesn't match the prolog
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pop {r4-r11}
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.seh_save_regs_w {r4-r11}
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bx lr
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.seh_nop
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.seh_endepilogue
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.seh_endproc
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.seh_proc notpacked2
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notpacked2:
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push {r4-r11}
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.seh_save_regs_w {r4-r11}
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vpush {d8-d9}
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.seh_save_fregs {d8-d9}
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.seh_endprologue
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nop
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.seh_startepilogue
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vpop {d8-d9}
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.seh_save_fregs {d8-d9}
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pop {r4-r11}
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.seh_save_regs_w {r4-r11}
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bx lr
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.seh_nop
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.seh_endepilogue
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// Not packed, as the epilog isn't at the end of the function
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nop
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.seh_endproc
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.seh_proc notpacked3
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notpacked3:
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push {r4-r11,lr}
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.seh_save_regs_w {r4-r11,lr}
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.seh_endprologue
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nop
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it ge
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// Not packed, as the epilog is conditional
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.seh_startepilogue_cond ge
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popge {r4-r11,pc}
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.seh_save_regs_w {r4-r11,pc}
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.seh_endepilogue
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.seh_endproc
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